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【单选题】
在通过断火并测量排气污染物含量变化判断喷油器性能的方法中,最能反应特征的污染物是( )。A.
CO
B.
HC
C.
CO2
D.
000
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举一反三
【单选题】The tourists, had enjoyed themselves so much in the botanic garden, were worn out
A.
all of what
B.
all of which
C.
all of them
D.
all of whom
【简答题】Mr. Knight was the manager of a hotel. One weekend all of the hotels in the city were full because there was a large meeting. On Friday, three men came into the hotel and asked for rooms. Mr. Knight s...
【简答题】What percentage of all of the medals earned by the top 5 of these countries were silver medals (rounded to the nearest percent)?
【单选题】Mr. Zhang said that he would be punctual for the appointment, _______ he were late?
A.
but what if
B.
and what about
C.
so what
D.
how about
【简答题】按标准的级另分类,我国的标准分为
【单选题】“What were you doing while all this was _______ the manager demanded angrily。
A.
getting on
B.
going on
C.
holding on
D.
carrying on
【简答题】按标准的级另分类，我国的标准分为：国家标准、行业标准、（）、企业标准。
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